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Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_819_Библиотеки_им_академика_М_И_Перельмана
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14.1 Finger Fracture Technique
139
a
b
Partial irrigant removal
aspiration
flue
pre–aspiration hole
tip
c
Fig. 14.4 The CUSA. (a) The consol. (b) Tip of the handpiece. (c) Different handpieces
mal. The other advantages are the operative precision
because of the ne size of the tip of the handpiece and
reduced blood loss.
The disadvantage of CUSA is the cost, and as a consequence, they are not available in many centres. The technique is reported to be slow by many authors. Also, some
authors believe that CUSA works less well in cirrhotic
livers when the liver parenchyma is more brotic.
Liver parenchymal transection using the CUSA can be
carried out within a reasonably short period of time, even
in cirrhotic livers, if the operating surgeon adopts the
technique used by the author of this book:
(a) The operating surgeon holds the liver with his left
transection to facilitate transection and to reduce
blood loss, and he uses the thumb in front of the liver
to help to open up the transection plane.
(d) The second assistant pulls the liver on the other side
of the transection plane to help to open up the transection plane.
(e) The transection starts at the inferior border of the
liver.
(f) Any large isolated blood vessels and bile ducts are
clipped on the specimen side by the surgeon and
ligated and divided on the patient’s side by the rst
assistant.
(g) Small isolated blood vessels and bile duct are coaguhand while he uses the handpiece of the CUSA with
his right hand.
(b) The technique begins with scoring the liver capsule
along the plane of transection.
(c) The surgeon uses the left hand with four ngers at the
back of the liver to left up the liver at the plane of liver
by the rst assistant.
(h) The transection plane is gradually deepened from
anterior to posterior and from caudal to cranial. The
liver is opened up as the transection proceeds like
opening up a book.
140
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14 Liver Transection Techniques andHaemostasis ontheRaw Surface oftheRemnant Liver
a
Fig. 14.5 Use of CUSA during liver parenchymal transection to enucleate a haemangioma. (a) Note that small vessels and bile ducts remain intact
when cutting through the liver parenchyma. (b) Diathermy coagulation of isolated blood vessels
b
thin stream of saline to divide hepatic parenchyma, while
preserving the larger vessels and bile ducts. The action is
by the use of a laminar liquid jet, rotating like a drill at the
surface of the applicator. The hydrojet delivers approxi-
mately 550–650 pounds per square inch of pressure for a
liver with normal consistency. A cleavage plane is then
created where the liquid forces the tissues apart (Fig.14.7).
This method also starts with the scoring of the liver
capsule with diathermy in the plane of transection.
Pringle’s manoeuvre is at the discretion of the surgeon.
The water jet is used in a back-and-forth motion to divide
the parenchyma until vessels and bile ducts are encountered. These structures are dealt with in the same way as
in Kelly clamp or CUSA methods. The liver is gradually
opened up at the transection plane. Intermittent stopping
and suction are applied to clear the operative eld of
water build up and for assessment of bleeding. This continues until the transection is complete.
The advantages are its precision and ability to preserve
blood vessels and bile ducts and decrease blood loss.
Fig. 14.6 Technique in Liver Transection using the CUSA: opening up
the transection plane like opening a book
Disadvantages are the cost, and the technique is slower
than the other techniques.
(i) Thus the surgeons work as a team with the operating
14.2 Techniques that Divide theLiver
surgeon transecting and clipping, and the rst assistant securing the isolated vessels and biliary ducts.
This cuts down the transection time tremendously.
(j) The job of the second assistant is, together with the
14.2.1 Staplers
surgeon’s left hand, to open up the plane of the liver
transaction (Fig.14.6).
3. Hydrojet
It is also called water jet. The device (HydroJet, ERBE,
Tubingen, Germany) uses a highly pressurised, extremely
Surgical staplers work by dividing hepatic parenchyma
between two staple lines. Surgical staplers are typically 30,
45 or 60mm long. A stapler with a vascular load should be
used.
Parenchyma andSeal OtheVascular
andBiliary Branches attheSameTime
14.2 Techniques that Divide theLiver Parenchyma andSeal OtheVascular andBiliary Branches attheSameTime
141
a
Fig. 14.7 Hydrojet. (a) The instrument. (b) Using hydrojet to dissect the hepatic parenchyma, exposing underlying blood vessels (inset), which
are then isolated and divided
b
Fig. 14.8 Left lateral sectionectomy using surgical staplers with a vascular load to divide the hepatic parenchyma
The technique starts with scoring the liver capsule along
the plane of live transection. The jaws of the stapler are then
opened and closed to crush the liver parenchyma. The remaining biliary and vascular structures are then closed by deploying the staplers. This is repeated until the transection is
complete (Fig.14.8). The advantage is the speed. The disadvantages are the cost and an increased risk of bile leakage.
14.2.2 Harmonic Scalpel or Scissors
Harmonic scalpel or scissors, also called ultrasonic scalpel
(harmonic scalpel, Ultracision, Ethicon Endo-Surgery),
has three working parts: the generator, the energy transmission cable with integrating handpiece, and the scalpel
or scissors. It works through a controlled electric current
transmitted via a transducer which converts the current to
mechanical ultrasonic vibration. The vibration is then
transmitted through the rod of the device to the tip, the
active blade. When the pistol grip of the device is activated, the active blade clamps against the opposing pad,
compressing the target tissue and generating friction. The
friction creates heat and subsequent coagulation of the target tissue (Fig.14.9).
The technique begins by scoring the liver capsule using
diathermy. The harmonic scalpel is then inserted in the liver
parenchyma, and the tissue is coagulated and divided. Larger
vessels or bile ducts have to be controlled with metallic clips
or suture ligation. This is repeated until the liver is
transected.
The advantages include minimisation of blood loss and its
potential use in laparoscopic liver resection. The disadvantages are an increased risk of biliary stula, the increased
costs and decreased availability.
142
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14 Liver Transection Techniques andHaemostasis ontheRaw Surface oftheRemnant Liver
Fig. 14.9 Harmonic scalpel or scissors
Fig. 14.10 TissuelLink
14.2.3 TissuelLink
The dissecting sealer uses radiofrequency energy from a
standard electrosurgical generator delivered to tissue
through a conductive uid, e.g. saline. The saline becomes
the electrode and couples the radiofrequency energy at the
top of the device to the tissue, increasing the contact area
and keeping the cut surface cool (below 100 °C). This
shrinks cellular collagen and seals small vessels and bile
ducts (Fig. 14.10). This procedure can be done with or
without the use of Pringle’s manoeuvre. However, larger
vessels and biliary structures need to be clipped or sutureligated and divided.
The main advantage is decrease in blood loss. There are
several disadvantages: the cost, the decreased availability
and the low speed in liver transection.
14.2.4 LigaSure
This device (Valleylab, Boulder, CO) is a bipolar vesselsealing device connected to a unique power generator with a
feedback control response system. A combination of pressure and energy delivered to tissue through the jaws of the
device create a seal by melting the collagen and elastin in
Fig. 14.11 LigaSure
vessel walls, reforming it to a permanent seal (Fig.14.11). It
can be used for vessels up to 7mm in diameter.
The technique starts by using an electrocautery to score
the liver capsule. The blades of the device are inserted into
the liver substances, and the enclosed tissue is crushed
between them several times, leaving vessels and bile ducts
behind. The structures are then grasped, and power is applied.
The jaws are released, and the coagulated blood vessels and
bile ducts are divided with scissors. These steps are repeated
until liver transection is complete.
The advantages are decreased blood loss, less suture ties
and faster operation. The disadvantages are increased cost
and difculty in cirrhotic liver resection.
14.3 Techniques that Coagulates theLiver
Parenchymal Tissues Before Liver
Transection
14.3.1 Microwave Tissue Coagulator
Tabuse in 1979 rst reported the use of microwave tissue coagulator to coagulate the liver parenchymal transection plane
before the liver was transected with a scalpel. This resulted in
decreased bleeding during liver transection. The technique
requires multiple punctures of the microwave tissue coagulator
into the transection plane. After the transection plane has been
coagulated, the liver is divided using a scalpel with very little
blood loss from the raw surfaces of the liver (Fig.14.12).
Our study showed the thick area of necrosis at the transection plane resulted in a higher incidence of biliary stula and
right pleural effusion, although this technique is effective in
decreasing blood loss during liver parenchymal transection.
14.4 Liver Parenchymal Transection Technique: Choice andtheBasic Principle
143
Fig. 14.12 (a) Liver
transection plane coagulated
with microwave tissue
coagulation. (b) No bleeding
from the raw surface of the
liver after cutting with a
scalpel and releasing the liver
blood inow/outow
a
b
14.3.2 Radiofrequency Coagulation
Radiofrequency thermal ablation works by converting radiofrequency waves to heat. There is the cooled tip single-probe
device. The new generation Habib® 4× (Emision Ltd., UK)
is an instrument with an array of four electrodes in a square
arrangement (Fig.14.13a). The four needles are arranged in
a 2×2 array with two pairs of needles (Fig. 14.13b). Two
versions are available: one for open surgery and a smaller
device for laparoscopic surgery. There is a long version with
long electrodes of 120 mm and a short version with short
electrodes of 60mm. The electrodes are made of stainless
steel covered with a nonstick coating.
Non-anatomical liver resection using the cooled tip
single- probe device involves ve steps (Fig.14.14):
• Step 1: mark on liver surface the margin of the tumour
(inner line).
• Step 2: mark on liver capsule 2cm outside of inner mark.
• Step 3: use the cooled tip single radiofrequency probe and
an RF generator to coagulate the plane of liver
transection.
• Step 4: the number of probe application at each site that is
required to obtain a zone of necrosis is related to the depth
of the liver parenchyma that needs to be resected.
• Step 5: the liver parenchyma is divided with a scalpel.
Liver transection using the Habib 4× (Fig.14.15).
• Step 1: mark on the liver surface the margin of the tumour.
• Step 2: mark on the liver capsule 2cm away from the liver
contralateral to the side of the tumour.
• Step 3: the Habib 4× is applied along the outer line.
• Step 4: at each site, the probe needs to be applied at various depths of the liver parenchyma to obtain a plane of
coagulation.
• Step 5: the nal division of liver parenchyma is with a
surgical scalpel between the two rows of coagulated
tissue.
The main advantage of this technique is the decreased
blood loss and the faster liver transection. The disadvantages
include the cost, decreased availability and imprecise transection line when near to vital structures.
14.4 Liver Parenchymal Transection
Technique: Choice andtheBasic
Principle
A very often question asked is: of the many liver parenchymal transection techniques that are currently available, which
is the best technique?
144
Step
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14 Liver Transection Techniques andHaemostasis ontheRaw Surface oftheRemnant Liver
a
Fig. 14.13 Radiofrequency coagulator: the Habib® 4X
1
Step 2 Step 3
b
Step 4
c.
b.
a.
Fig. 14.14 Five steps to achieve liver resection using the radiofrequency energy single-probe device
The answer to this question is simple, the one technique
that works best in your hand. Different techniques work differently under different surgeon’s hands, and one should
choose the technique that he is most comfortable with.
It is important to realise the proper application of the
basic principle in liver transection is more important than
the instrument that is required to carry it out. In 1966,
Couinaud wrote, ‘Finger fracture should be a gentle tech-
nique and must be respectful of anatomy; it should be carried exactly along the ssures and lead towards
well-determined pedicles. It affords a quick opening of the
ssures and the control of secondary vessels which usually
bleed in the plane of section’. This statement is true even
after 40 years since it was rst published, despite all the
modern technologies and new devices that are available for
liver transection.
Step 5
14.5 Liver Transection Techniques Using Liver Clamps andTourniquets
145
14.5 Liver Transection Techniques Using
Liver Clamps andTourniquets
14.5.1 Liver Clamps
The use of liver clamps has been reported to reduce intraoperative blood loss during liver resection. Nakayama is probably responsible for the rst liver clamp designed especially
for liver resection. Various clamps have been designed and
applied with success in liver resection, including clamps by
Stucke (1961), Storm and Longmire (1971), Lin (1973),
Kanematsu etal. (1974) and de Souza (1979) (Fig.14.16).
Liver resection varying from simple wedge resection to
extended right hepatectomy has been carried out using
clamps (Figs.14.17 and 14.18), and the clamps used on most
patients is that designed by Lin.
14.5.2 Liver Tourniquets
Based on the same principle of the liver clamp is the use of
tourniquets around the liver made with nylon Velcro reported
Fig. 14.15 Liver transection using the Habib® 4X radiofrequency
coagulator
Fig. 14.16 Different types of liver clamps
Fig. 14.17 Application of a liver clamp in major liver resection
Fig. 14.18 Parenchymal compression using a Longmire clamp prior to
a peripheral wedge resection
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Fig. 14.19 Nylon Velcro tourniquet
14 Liver Transection Techniques andHaemostasis ontheRaw Surface oftheRemnant Liver
14.6.1 History ofHaemostasis oftheLiver Cut
Surface
Suturing of the liver to control haemorrhage was rst recommended by Postemski in 1985. Von Eiseberg, Keen and
Kousnetzoff and Pensky favoured individual ligation of bleeding vessels on the cut surface; however, massive bleeding in
the old days made this technically difcult. The contributions
of Kousnetzoff and Pensky, and of Auvray established the
practice of using a blunt-ended needle with a double thread to
place a through-and-through mattress suture across the entire
liver above the resection line. As sutures pulled into the soft
liver tissue, a series of guards was used (Fig.14.21). Ceccherelli
and Bianchi used whalebone (1894), and Payr and Martina
used plates of magnesium plates (1905) to hold the liver
sutures. Beck advocated plates of decalcied bone or abdominal fascia in 1902. Stem used cartilage from the scapula of a
calf in 1905. Cautery was often used, but most surgeons found
that a hot knife was suitable only for small vessels. A series of
innovative methods was developed, but these methods have
become obsolete: steam, hot air, liquid air and compressive
forceps. Tumours on stalks were brought out of the belly and
held out with hair pins, knitting needles and other convenient
devices. Bulky removable ligatures and packs were used
extensively to allow delayed sloughs and peritoneal exclusion
of the tumour and its stalk.
Most of these historical techniques are obsolete.
Fig. 14.20 Latex Tube Tourniquet
by Ma Xin 1981 (Fig.14.19), or with latex tube reported by
Li A in 1989 (Fig.14.20).
All these liver clamps and tourniquets suffer from the fol-
lowing defects:
(a) They may slip.
(b) They may crush and lacerate the liver at the clamp/tour-
niquet site; and.
(c) Traction of them during liver transection may tear the
small hepatic veins that drain from the liver directly into
the inferior vena cava, resulting in torrential bleeding.
These liver clamps and tourniquets are now obsolete.
14.6 Haemostasis ontheRaw Surface
oftheRemnant Liver
After the liver has been transected, adequate haemostasis on
the raw surface of the remnant liver needs to be carried out.
14.6.2 Modern Techniques ofHaemostasis
onRaw Liver Surface
1. Raw Liver Surfaces Not Sutured Together
Fig. 14.21 Suturing the liver raw area using guards
14.6 Haemostasis ontheRaw Surface oftheRemnant Liver
Keen in 1899 advocated the plication of bleeding points
on the raw surface of the liver, which is now the preferred method used for haemostasis. In modern liver surgery, most large bleeding points can be controlled using
a gure-of-8 stitch around the bleeder (Fig.14.22). In
patients with a large venous opening, a deep purse- string
stitch around the bleeding point may be necessary before
the bleeder can be controlled (Fig. 14.23). Projecting
ends of bleeding vessels can be controlled with ligaclips. The small bleeding points can be controlled with
the use of diathermy. Diffuse oozing from the raw area
can be controlled with either the Argon Beam Coagulator
147
Fig. 14.24 Raw area left after resection
Fig. 14.22 A gure-of-8 stitch to control a bleeding vessel
Fig. 14.23 A deep purse-string stitch to control a large venous
opening
Fig. 14.25 Tissue glue used on raw surface of the liver
or the spraying of tissue glue. After haemostasis and
checking for bile leak, the raw surface is usually left
unsutured (Fig.14.24). A pedicle omental ap may be
used to cover the raw surface to decrease the chance of
bile leakage or the raw area sprayed with brin glue
(Fig.14.25).
2. Suturing the Liver Raw Surface Together
Under exceptional circumstances, when the patient develops bleeding tendency due to coagulopathy, the measures
in (a) is not adequate to deal with the oozing from the raw
surface of the liver after liver resection. If the raw area is
small, it can be sutured together (Fig.14.26). If the raw
area is large, attempts to suture the liver raw surface with
continuous suturing usually ends up with laceration of the
suture/liver interface, resulting in more bleeding. There
are two ways to deal with this scenario:
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14 Liver Transection Techniques andHaemostasis ontheRaw Surface oftheRemnant Liver
(a) Suturing the raw surface of the liver over a ‘guard’ of
Surgicel (Ethicon, New Jersey) with horizontal mattress
stitches (Fig.14.27).
(b) Using a blunt needle with a double suture either using
the Kousnetzoff and Pensky technique (Fig. 14.28) or
the Wendel technique (Fig.14.29).
If a blunt needle with a double thread is not available,
the chain ligature technique of Auvray can be used
(Fig.14.30).
(c) After a small wedge liver resection, the liver can be
sutured together using one of the following methods
(Fig.14.31).
Fig. 14.26 Liver raw area is sutured together only if haemostasis is
difcult and the transected raw area is small
(d) Traumatic blunt injury.
The technique in haemostasis in a rupture liver as a
result of blunt injury is slightly different from that in the
situation of elective liver surgery because in elective
liver surgery, the condition is under control, and there
should not be a lot of bleeding points in the raw area on
the release of the inow and/or outow clamps.
The best way to identify large bleeders from the surfaces of the lacerated liver is to use two hands to compress on the liver to slow down the bleeding (Fig.14.32).
Once the large bleeding points are identied, they can be
dealt with by ligation, clipping or suture ligation. One
should avoid dissecting into the liver and further splitting the liver to make the laceration worse. Once the
major bleeders have been dealt with, supercial liver
laceration can be sutured together using either interrupted stitches or a horizontal mattress stitch to approximate the raw areas together (Fig.14.33).
Under the situation when the laceration is deep, and
the edges of the laceration are rugged and do not take
stitches well, the use of a horizontal mattress suturing
over a Surgicel guard on both edges of the laceration
helps to prevent the sutures from cutting through the
edges of the liver laceration (Fig.
14.34).
The alternative is to use interlocking stitches to reinforce the edges of the laceration before simple sutures
are applied to approximate the lacerated edges together
(Fig.14.35).
Another method is to use the Robinson and Butcher
suturing technique to suture the edges of the laceration
together (Fig.14.36).
Fig. 14.27 Suturing the liver raw area over a ‘guard’ of Surgicel with horizontal mattress stitches
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